<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card class="box-card">
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" class="input-with-select" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe style="width: 100%">
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label='姓名' prop="username"></el-table-column>
        <el-table-column label='邮箱' prop="email"></el-table-column>
        <el-table-column label='电话' prop="mobile"></el-table-column>
        <el-table-column label='角色' prop="role_name"></el-table-column>
        <el-table-column label='状态'>
          <template slot-scope="scope">
           <el-switch v-model="scope.row.mg_state"  @change="userStateChange(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label='操作' width="150px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
           <el-button type="primary" size="mini" icon="el-icon-edit" circle @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
           <el-button type="danger" size="mini" icon="el-icon-delete" circle @click="removeUserById(scope.row.id)"></el-button>
               <!-- 分配角色按钮 -->
           <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
           <el-button type="warning" size="mini" icon="el-icon-setting" circle @click="showRoleDialog(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total">
      </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px" >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px" >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="seRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
      <!-- 内容主体区域 -->
      <div>
        <p>当前用户:{{userInfo.username}}</p>
        <p>当前角色:{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="seRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="setRole">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  prop: [],
  data () {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
    // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        // 合法的邮箱
        return cb()
      }
      cb(new Error('请输入合法的邮箱'))
    }
    // 验证手机号的规则
    var checkMobile = (rule, value, cb) => {
    // 验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        // 合法的邮箱
        return cb()
      }
      cb(new Error('请输入合法的手机号'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2
      },
      userList: [],
      // 总数据条数
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '用户名的长度在3~10个字符之间', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '用户名的长度在6~15个字符之间', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 修改添加用户对话框的显示与隐藏
      editDialogVisible: false,
      // 修改用户的表单数据
      editForm: {
        id: undefined,
        username: '',
        email: '',
        mobile: ''
      },
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      seRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色Id值
      selectedRoleId: ''
    }
  },
  mounted () {
    this.getUserList()
  },
  methods: {
    // 获取用户列表
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      this.userList = res.data.users
      this.total = res.data.total
      // console.log(res)
    },
    // 监听 pagesize 改变的事件
    handleSizeChange (val) {
      // console.log(val)
      this.queryInfo.pagesize = val
      this.getUserList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange (val) {
      // console.log(val)
      this.queryInfo.pagenum = val
      this.getUserList()
    },
    // 监听 switch 开关状态的改变
    async userStateChange (val) {
      const { data: res } = await this.$http.put(`users/${val.id}/state/${val.mg_state}`)
      // console.log(res)
      if (res.meta.status !== 200) {
        val.mg_state = !val.mg_state
        return this.$message.error('用户状态更新失败')
      }
      this.$message.success('用户状态更新成功')
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮，添加新用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        // 可以发起添加用户的网络请求
        await this.$http.post('users', this.addForm)
        this.addDialogVisible = false
        this.$message({
          message: '添加成功',
          type: 'success',
          showClose: true
        })
        this.getUserList()
      })
    },
    // 展示修改用户的对话框
    async showEditDialog (id) {
      const { data: res } = await this.$http.get('users/' + id)
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 点击按钮，修改用户
    editUser () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 可以发起添加用户的网络请求
        await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
        // 关闭对话框
        this.editDialogVisible = false
        // 提示修改成功
        this.$message({
          message: '修改用户信息成功',
          type: 'success',
          showClose: true
        })
        // 刷新用户列表
        this.getUserList()
      })
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed () {
      // resetFields 重置为初始数据
      // this.$refs.addFormRef.resetFields()
      this.editForm = {
        id: undefined,
        username: '',
        email: '',
        mobile: ''
      }
    },
    // 删除用户
    removeUserById (id) {
      this.$confirm('确认删除?', '警告', {
        confirmButtonText: '确认',
        cancelButtonText: '取消',
        type: 'warning',
        callback: async action => {
          if (action === 'confirm') {
            await this.$http.delete('users/' + id)
            this.getUserList()
          }
        }
      })
    },
    // 展示分配角色的对话框
    async showRoleDialog (userInfo) {
      this.userInfo = userInfo
      this.seRoleDialogVisible = true
      const { data: res } = await this.$http.get('roles')
      this.rolesList = res.data
    },
    async setRole () {
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败！')
      }

      this.$message.success('更新角色成功！')
      this.getUserList()
      this.seRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>
</style>
